I am wondering is it possible to make a Luci page that can telnet (via nc) or ssh to an other device like a modem, automatically run some commands (maybe once every few seconds), scrape the output (stuff like connection stats) and then display them?
You could develop a package for that, and add LuCI support.
Normal LuCI statistics app has built-in networking capability, so that you can collect data from several routers to be displayed at one. I assume that you have already tested that?
(You may need to have some as additional collectd-mod-... packages installed to get all the metrics that you want. The basic luci-app-statistics installs some of those, but not all)
But that assumes that you can get collectd to run in those other devices. Easy if they are OpenWrt devices, but may not be feasible for 3rd party devices
The other device is broadcom based (so no DSL driver, even though OpenWRT can run on it).
What I was thinking was writing a simple shell script to pull the data, write it to a tmp file and then somehow make a luci page to display it's contents.
The info I want to display is something like this:
Mode: ADSL2+ TPS-TC: ATM Mode Trellis: U:ON /D:ON Line Status: No Defect Training Status: Showtime Down Up SNR (dB): 7.9 6.0 Attn(dB): 51.0 32.1 Pwr(dBm): 18.6 12.2 ADSL2 framing Bearer 0 MSGc: 58 12 B: 58 13 M: 4 16 T: 3 9 R: 10 10 S: 1.3452 6.6857 L: 1463 280 D: 32 8 Counters Bearer 0 SF: 6672779 416603 SFErr: 167 49 RS: 320293309 4282835 RSCorr: 3217205 4332 RSUnCorr: 2290 0 Bearer 0 HEC: 2211 108 OCD: 0 0 LCD: 0 0 Total Cells: 1418152071 270193496 Data Cells: 32127222 5234743 Drop Cells: 0 Bit Errors: 0 12226 ES: 89 27 SES: 1 2 UAS: 30 30 AS: 107714 Bearer 0 INP: 0.50 1.00 INPRein: 0.00 0.00 delay: 10 13 PER: 16.14 16.92 OR: 31.71 8.50 Bitswap: 0/0 0/23429
No fancy graphs or anything.
Some good tips here;
Depending on whether you want;
you might head in different directions.....
Then there is the timing aspect....;
-ui refresh driven vs cron vs at etc. etc.
i've got some basic bash graphing ( rrd ) scripts if you head in that direction I might be able to find them if you run into trouble...